T09 · Insecure Skill Coding Practices
Warning
- Location
scripts/script.sh:6- Finding
Sensitive financial records rely on ambient filesystem permissions
- Content
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> "$DATA_DIR/history.log"; } ``` A representative record-writing path is: ```bash local input="$*" local ts=$(date '+%Y-%m-%d %H:%M') echo "$ts|$input" >> "$DATA_DIR/record.log" ``` Equivalent file-writing logic is repeated for the other record types. ### Technical Analysis The application stores financial records, balances, tax notes, budgets, and history in `~/.local/share/dividend`, but it does not explicitly establish restrictive permissions for either the directory or the files. `mkdir -p` and shell redirection apply permissions according to the process's current `umask`. In an environment with a permissive `umask`, the directory, log files, and generated exports may be accessible to other local users. The fact that the directory is under the user's home directory does not independently guarantee confidentiality because parent-directory permissions vary between systems. The records are also stored as unencrypted plaintext. Encryption is not necessarily required for a local command-line application, but restrictive filesystem permissions are essential because the data is explicitly financial and potentially sensitive. ### Attack Path 1. A user runs the application in an environment with a permissive `umask`. 2. The script creates `~/.local/share/dividend` and its log files without explicit restrictive modes. 3. The user records sensitive balances, tax notes, budgets, or transaction information. 4. Another local account with filesystem traversal and read access opens the generated log or export files. 5. The attacker obtains the user's stored financial information. ### Impact Assessment This issue can expose all locally stor ...[truncated 461 chars]- Remediation
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